(19)
(11) EP 4 492 662 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.05.2025 Bulletin 2025/21

(43) Date of publication A2:
15.01.2025 Bulletin 2025/03

(21) Application number: 24209960.4

(22) Date of filing: 30.10.2024
(51) International Patent Classification (IPC): 
H02M 1/00(2006.01)
H02M 3/335(2006.01)
 H02M 3/00(2006.01)
H02M 3/158(2006.01)
(52) Cooperative Patent Classification (CPC):
H02M 3/01; H02M 1/0025; H02M 3/1584; H02M 3/33515; Y02B 70/10
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(71) Applicants:
  • NXP USA, Inc.
    Austin, TX 78735 (US)
  • The Governing Council of the University of Toronto
    Toronto, Ontario M5G 1L7 (CA)

(72) Inventors:
  • COBANI, Orest
    5656AG Eindhoven (NL)
  • TRESCASES, Olivier
    5656AG Eindhoven (NL)
  • BERTOLINI, Luca
    5656AG Eindhoven (NL)
  • van den BERG, Arjan
    5656AG Eindhoven (NL)
  • HALBERSTADT, Hans
    5656AG Eindhoven (NL)
  • LAMMERS, Thieu
    5656AG Eindhoven (NL)

(74) Representative: Hardingham, Christopher Mark 
NXP Semiconductors Intellectual Property Group The Cattle Barn Upper Ashfield Farm, Hoe Lane
Romsey, Hampshire S051 9NJ
Romsey, Hampshire S051 9NJ (GB)

   


(54) DISTRIBUTED CONTROL OF UNCOUPLED MULTIPHASE LLC RESONANT CONVERTERS


(57) Disclosed is a phase-controller and method of hysteretic control of a phase of a decoupled multiphase resonant converter, using a hysteretic window offset control parameter, the method comprising: determining a minimum 50% duty cycle (50% DC) operating frequency, fmin, from a set consisting of the respective 50% DC operating frequency of each phase of the multiphase resonant converter; in response to the 50% duty cycle operating frequency of the phase being different from fmin, adjusting the hysteretic window offset of the phase to change a current operating frequency of the phase towards fmin; and, in response to a change of an operating condition of the phase: re-adjusting the hysteretic window offset of the phase to change the operating frequency of the phase towards fmn; and in the event that a new 50% dc operating frequency of the phase, f*min, is less than fmin; replacing fmin by f*min, and communicating f*min as a new minimum 50% dc operating frequency to each other phase.







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